Browsing by Issue Date, starting with "2017-11-16"

Filter results by year or month

Now showing 1 - 20 of 13714

Estudo do método de mistura das suspensões precipitadas (MPS) para a síntese de catalisadores de tungstênio suportado em zircônia (WOx/ZrO2)
(Universidade Federal de São Carlos, 2017-11-16)
Piva, Diógenes Honorato
;
Urquieta-González, Ernesto Antonio
;
https://lattes.cnpq.br/2389975677904655
;
Morelli, Márcio Raymundo
;
https://lattes.cnpq.br/0172837599844991
Zirconia-supported tungsten oxide (WOx/ZrO2) is one of the main acid catalysts. The development of new methods for its preparation has been widely studied lately. This thesis presents a study of a new synthesis method, named Mixed Precipited Suspension (MPS), to prepare WOx/ZrO2 catalysts. This method consists in the mix of the precipitated suspensions containing the elements of interest, appropriate homogeneity during the mixing step and activation by heat treatment. The dependence of the catalyst properties were investigated as function of synthesis conditions (time and temperature during the mixing step), tungsten content and calcination temperature. The catalysts were characterized and their activity evaluated for oxidative desulfurization (ODS) of model fuel containing dibenzothiophene (DBT). Results show that high mixing time of the suspensions increase the tetragonal ZrO2 phase concentration and the surface area of the catalysts. Furthermore, an improvement of the activity is observed in the catalysts obtained after larger mixing time, which was attributed to the high dispersed distorted Zr-WOx clusters, polytungstate species and no formation of crystalline WO3. The presence of tungstite and the increase of the temperature during the mixing step are prejudicial to achieve highly active catalysts. In addition, the increase in the WOx surface density to values above the monolayer surface coverage (4.5 W nm-2) aid the formation of active species and, consequently, catalysts more effective. Moreover, MPS method manteined the nominal composition and prepared catalysts with higher activity than those obtained by impregnation, for all calcination temperature studied. These results demonstrate the potentiality of MPS method for preparing WOx/ZrO2 catalysts.
Complexos metálicos luminescentes com ácidos fenólicos coordenados: alvos seletivos a mitocôndrias e mapeamento da atividade antioxidante in vitro e in vivo por técnicas fluorescentes
(Universidade Federal de São Carlos, 2017-11-16)
Silva, Eldevan Santos
;
Carlos, Rose Maria
;
https://lattes.cnpq.br/1589143355309943
;
https://lattes.cnpq.br/3658375577541136
In this work, the syntheses and characterizations of the complexes are presented, cis-[Mg(phen)(iso)(H2O)3](CH3COO) and [Mg(RPA)(iso)(H2O)(OH)], where phn =phenanthroline, iso= isovanillic , and N-(9-(2-(((4-((1,10-phenanthrolin-5-yl)carbamoyl)benzyl)oxy)carbonyl)phenyl)-6-ethylamino) -3H-xanthen-3-ylidene)-N-ethylethanaminium bromide (RPA) by elemental analysis of C, H, N and thermogravimetric analysis and by NMR of 1H and 13C, 2D COSY and DOSY. Compared to isovanillic acid, the complexes obtained are stable in the solid state, in aqueous solution and are not photodegradable. The insecticidal activity of cis-[Mg(phen)(iso)(H2O)3](CH3COO) in the form of the baits (2.0mgg-1) investigated against leaf-cutting ants of the genus Atta sexdens rubropilosa presented a mode of action slow with 100% mortality on the sixth day, S50 = 2b, and complete inhibition of the development of the symbiotic fungus leucoagaricus gongylophorus. This complex did not show any toxicity to aquatic environment when exposed to paulistinha fish (Zebrafish) for 96 hours at a concentration of 2.0 mgL-1. It also showed no toxicity in the terrestrial environment. In this chronic study during 21day, male Wistar rats were treated with cis-[Mg(phen)(iso)(H2O)3](CH3COO) complex saline solution via intraperitoneal (3.0 mg/kg). Behavioral studies (open field, forced swimming and high cross labyrinth) have suggested that this complex possesses characteristics of anxiolytic drugs. Complex I has high inhibition capacity to oxygen reactive species (1O2, O2•‾), with IC50 below 100M. It has presented excellent inhibition of lipid peroxidation (ROO•, LO•) investigated in pork samples with IC50 at the scale 500 mmolL-1. complex, presented in this work, opens a new horizon of applications in agricultural, medic, and food areas.
Função cardíaca e metabolismo de machos e fêmeas de Rhinella icterica no período reprodutivo
(Universidade Federal de São Carlos, 2017-11-17)
Salla, Raquel Fernanda
;
Costa, Monica Jones
;
https://lattes.cnpq.br/0578970203313985
;
Kalinin, Ana Lúcia
;
https://lattes.cnpq.br/5493936744279888
Considering the absence of studies on the cardiac function of distinct sexes of native anuran amphibians, the present study proposed to compare the basal heart rate (fh) and the importance and participation of the main proteins involved in the excitation-contraction coupling of each sex in Rhinella icterica species: the Na+/Ca2+ exchanger (NCX), the sarcoplasmic reticulum Ca2+ ATPase (SERCA), its advisory protein phospholamban (PLB), and the Na +/K+ ATPase membrane protein. In addition, the analysis of the basal metabolic rate of the animals verified if the cardiac characteristics are related to the metabolic level of each sex in this species. For this, in vitro experiments with ventricular cardiac strips treated with rianodine were performed, which demonstrated a significant reduction of the contraction force, indicating a relevant partitioning of the sarcoplasmic reticulum in both genera of this species, but more evident in males. LiCl treatment demonstrated a greater dependence of females on the role of NCX as a source of calcium for contraction, and even more on relaxation mechanisms. The ouabain protocol demonstrated a significant importance of Na +/K+ ATPase in both sexes, especially in the relaxation mechanisms. Corroborating these results, the expression of SERCA and PLB was higher in males, and NCX showed higher expression in females. The analyzes of basal metabolic rate of males also revealed higher values, which indicates a possible relationship between the metabolic rate of each sexual gender and their cardiac function adapted to each metabolism in this species. Cardiac function, therefore, varies according to sex in R. icterica, which represents an unprecedented finding in the comparative physiology of anuran amphibians.
OSCIP e SUS: ligações possíveis a partir de um estudo de caso
(Universidade Federal de São Carlos, 2017-11-17)
Silva, Mariana Sanchez Ramos da
;
Fioroni, Luciana Nogueira
;
https://lattes.cnpq.br/8086810053892035
;
https://lattes.cnpq.br/0525846101417453
In Brazil, private public interest initiatives undertaken in the third sector have assumed an important role in civil society by complementing the health care provided by the public health network. In São Carlos, a city located in São Paulo state, the Multidisciplinary Health Care Center (CAMS) association represents a specific model of care that is defined as a Public Interest Civil Society Organization (OSCIP), which enables the provision of health care to low income population. Since CAMS handles a great number of cases concerning mental health care and physical and psychosocial rehabilitation of patients that have a socioeconomic status similar to that of Unified Health System (SUS) users, a study addressing this specific OSCIP was necessary to evaluate the aspects regarding patient referral to CAMS and which health care needs are met. This is a cross-sectional case study that aimed to investigate the health care demand using empirical data. The proposed methodological approach used enabled the analysis of the existing articulation between local SUS and CAMS; to describe and characterize the profile of the users and the demands that arrived at the CAMS and to identify the flows established between the municipal health services and CAMS. Therefore, a research was carried out in CAMS’ patient socioeconomic status screening database for one year. Data were entered into spreadsheets to determine the main socioeconomic characteristics of the studied population, the services sought, and the source of the referrals. Results showed that the majority of patients were women under 30 years old who had completed primary education, who did not have a private health care plan, and whose income was lower than minimum wage. These findings show that these are characteristics similar to those of SUS’ patients. The most commonly sought services highlighted the weaknesses of Sao Carlos’ Health Care Network (RAS): mental health and child health. The main source of referrals public services which were not necessarily included in the RAS: equipment and services of a public university, which configured a specific relationship between CAMS and university. In an effort to meet a specific demand for specialized health care, CAMS’ operations bring to light the deficiencies and shortcomings of the public health care system in Sao Carlos. It is concluded that the results can support future planning and communication actions between CAMS, the public university and the local SUS, aiming to minimize fragility of care in Mental Health and Child Health.
Mecanismos eletroquímicos nos processos de descarga do sistema PbO2/H2SO4
(Universidade Federal de São Carlos, 2017-11-17)
Freitas, Heverson Renan de
;
D'Alkaine, Carlos Ventura
;
https://lattes.cnpq.br/8699821828310072
;
https://lattes.cnpq.br/8829870766609044
The goal of this work was to seek a mechanistic and morphological understanding of the discharge process of lead-acid batteries’ positive plates, which exhibits a complex porous structure. Due to this fact, nonporous electrodes, ideally porous electrodes and positive plates were investigated. Studies on the discharge process of nonporous electrodes facilitated the reactional processes understanding from a mechanistic and morphological point of view. It was shown the existence of two steps during the discharge process. The first step is easily invertible and follows a solid state reaction mechanism, in which is possible to calculate the ionic resistivity evolution during the voltametric transient. The discharge product of the first step seems to be a PbOn1 electronic conductor (due to its stoichiometry) and, from the fact that it is a very thin film attached to the surface, this product was not observable by SEM measurements. On the other hand, the second step is not easily invertible and occurs at slower rates. During the second step, there is a stoichiometric change on the discharge product of the first step, giving rise to a PbOn2 (unstable and electronic insulator) that reacts with H2SO4 on the solution and forms lead basic sulfates. By the end of the second step, the discharge products give rise to structures observable by SEM measurements, which result from a dissolution/precipitation mechanism (that may occur due to longer processes times). The final stationary potential for discharge process of the PbO2/H2SO4 system was determined. Studies on ideally porous electrodes made it clear the existence of a zonal character of the discharge reactions. Studies on positive plates allowed the understanding of how complex the kinetic processes are on porous electrodes when compared to nonporous systems. Due to the structural complexity and the reactional zonal character, the transformations are much slower (time order of months). Besides that, the equilibrium O2/H2O must be taken into account to understand the results on positive plates, due to O2 bubbles trapped inside the pores during previous charge processes. These interpretations were made possible by Open Circuit Potential measurements assisted by concepts of Mixed Potential and Dynamical Systems Theories, specially the concept of attractor. This methodology allowed a new approach to electrochemical processes that implies multiple electrodes.
O zumbi de Bruce LaBruce em Otto; or, Up with dead people
(Universidade Federal de São Carlos, 2017-11-17)
Silva, Thales Figueiredo da
;
Costa, Flávia Cesarino
;
https://lattes.cnpq.br/1653890782950111
;
https://lattes.cnpq.br/7345796001621366
The Canadian filmmaker Bruce LaBruce has a production focused on the discussions of the LGBT + theme, with questions about sexual gender and cinematographic language. In Otto; or, Up with dead people (2008) he uses for the first time the zombie like element to elaborate the subjects that are expensive to his work. From the study of this film we intend to explore the strategies employed by this queer filmmaker, so we can point out some possible reasons that led him to work with a character with a great tradition of cinema as the zombie.
Comportamento tribológico dos compósitos poliméricos utilizados no anel de atrito do amortecedor torcional de discos de embreagem
(Universidade Federal de São Carlos, 2017-11-18)
Rosa, Avital Gabriel de Almeida
;
Kliauga, Andrea Madeira
The three cylinder motors tend to vibrate more than the conventional four cylinder ones. In this new condition the transmission system and in particular the torsional damper of the clutch disc is subjected to sever wear and friction. The great challenge is to select new materials with low wear rate and adequate friction coefficient to attenuate this new vibration level. In this work three different candidate materials to be used as friction rings inside the torsional damper of clutch discs were tested in terms of wear resistance and friction. Two of the studied materials are currently used in the market (PA66 35 GF and NBR) in four cylinder motors and the third is currently used in clutch facing (NBR matrix composite). The materials were purchased from Schaeffler suppliers. The first step was the microstructural characterization and determination of the thermal stability of the three materials without the influence of friction. For that, the microstructure was analyzed by optical and electronic microscopy of Scanning (SEM), the amount of fibers and inorganic reinforcers was determined by burning tests and,the transition temperatures were determined by differential calorimetry. Two aging temperatures were studied 80 and 150oC. The effect of the ageing time was determined by hardness and infrared spectroscopy measurements. Among the three materials and clutch facing, they show a more stable structure in the temperature range between 80 and 150ºC. The PA66GF35 suffered changes in crystalline content and the NBR thermal degradation. The second step consisted in determining the wear characteristics of the material in bench tests with the objective of measuring the wear rate and friction coefficient of the material under extreme conditions of specific pressure and velocity (DIN50320, 1979). The results of the friction test had the following classification: NBR (0.13)> PA66GF35 (0.11)> clutch facing (0.09). Despite having a lower coefficient of friction, the clutch facing was the only material that achieved the minimum wear resistance required for the friction ring. Therefore the clutch facing is the best material for a 3 cylinder engine that requires a higher wear and thermal resistance on the clutch plate.
Representação de percepções de consumidores : o emprego da Engenharia Kansei para a construção de painéis semânticos
(Universidade Federal de São Carlos, 2017-11-20)
Zabotto, Cristina Nardin
;
Silva, Sérgio Luis da
;
https://lattes.cnpq.br/4164265591178698
;
https://lattes.cnpq.br/7362849543730762
The research introduces an algorithm based on the Kansei Engineering System capable of producing Semantic Panels for the use of professionals during product development. Semantic Panels are comprised of a series of visual images used by designers to express the emotions of potential customers, supporting the analysis of creative ideas for product development. The Kansei Engineering system has the role of linking consumers’ feelings and emotions to product descriptive features. By developing and algorithm when these two pieces of information are linked to each other, and by identifying the existing interactions by means of Rough Set statistical analysis, professionals enrich the material available for decision making. By comparing it with the existing literature, this is a new formulation for the use of the Kansei Engineering System for production of Semantic Panels structured into five cycles, and capturing users’ opinions in all stages of the creation process. The above-mentioned algorithm was developed and a subset of real data was used for applying the procedure to a product of consumer goods. The proposal was proven a feasible alternative for the construction of Semantic Panels based on consumers’ information.
A formação de professores e a (in)visibilidade da educação especial nos projetos pedagógicos dos cursos de licenciatura do Instituto Federal de Goiás
(Universidade Federal de São Carlos, 2017-11-21)
Souza, Calixto Júnior de
;
Denari, Fátima Elisabeth
;
https://lattes.cnpq.br/5575213011914394
;
https://lattes.cnpq.br/2880328853795907
Based from the assumption that educational inclusion is a process and, in turn, the characteristic of being unfinished, it is necessary a constant analysis for the formation of teachers as a way, on the one hand, to remove its gaps and, on the other hand side, to seek the concretization of its advances in the face of the ephemerality of the social and educational relations of the contemporary world. The present study aimed to investigate the Pedagogical Projects of Courses (PPC) and the curricular matrices of the initial formation of teachers of the Federal Institute of Education, Science and Technology of Goiás (IFG) in order to analyze and discuss how the discipline in the undergraduate courses studied. In order to focus on the initial formation of teachers of the IFG, the specific objectives are to identify the presence of the discipline of Special Education and its contributions to the process of educational inclusion; understand how this institution makes it possible to include the students in a condition of disability through the documents analyzed; and, finally, to analyze how the PPC of the degree courses of the IFG are articulated with the process of educational inclusion, considering the curricular matrices as the “background” of this process. Therefore, a documental research with an exploratory study character skewed by a case study was adopted as methodological course, thus, it was based on the analysis of the PPC, curricular matrices, resolutions pertinent to the IFG as corpus that contribute to the articulation of the initial training of teachers of this institution. With regard to the PPC of IFG, 19 (nineteen) undergraduate courses were analyzed, and in only two campuses do they have the Special Education discipline as mediator of the knowledge related to the process of educational inclusion and, therefore, considering some elements disciplines, such as, for example, the disciplines that are taught and, also, the timetable of the disciplines. Despite the absence of a legal framework that contemplates the obligation of the Special Education discipline, given the data presented and analyzed, it is inferred the small number of courses that have this discipline as a constituent part of the curriculum, in order to address an allusion to the process of educational inclusion and certainly making a gap in the training of teachers for the construction of future teachers who seek to include pupils in a condition of deficiency in their pedagogical practices. As a result, it is becoming increasingly urgent to seek a critical and conscious teacher training in the process of educational inclusion with a view to building an educational foundation for quality education and, above all, an inclusive nature. Thus, in addition to the inclusion or exclusion of a discipline in the curriculum, it is necessary to rethink the articulation between knowledge and contents of the various disciplines so that a culture of interdisciplinarity can be created in undergraduate courses.
Enfermagem e gestantes de alto risco hospitalizadas : desafios para integralidade do cuidado
(Universidade Federal de São Carlos, 2017-11-22)
Souza, Bruna Felisberto de
;
Bussadori, Jamile Claro de Castro
;
https://lattes.cnpq.br/4549657176930635
;
Wernet, Monika
;
https://lattes.cnpq.br/6056127658896265
Innumerous specificities of the pregnancy-puerperal cycle lead and claim for health practices aimed at qualified listening, empathy and acceptance, especially in the face of the understanding of this phenomenon in its physical, psychic and social transformations. However, the current health obstetrical model is supported by the biomedical view, which disrespects and ignores women’s right to health, from a perspective of little involvement in their care, limiting access and information. This reality infers that women have a submissive role in the system, especially in situations of greater vulnerability, as in the case of gestating and giving birth in a condition of high risk. This qualitative and field study aimed at characterizing and discussing the nursing care practice of a maternity nursing team to hospitalized high risk pregnant women. We used Integrality and Care in health practices as theoretical conceptual basis and as a methodological reference Content Analysis, in its thematic modality. The data were collected in a municipality in the interior of the state of São Paulo, through non-participant observation of nursing care to high-risk pregnant women followed by an individual and open interview with six nurses, four nursing technicians and two nursing assistants, totaling twelve participants, responsible for direct care to hospitalized pregnant women at risk. The analysis of empirical data allowed us to identify that the care practice of hospitalized high risk pregnant women is anchored in three processes, portrayed by the thematic categories “Emotional welcome”, “Information support” and “Evaluation and monitoring of gestational risk”. In the first thematic category, we noted efforts to provide a practice guided by empathy and acceptance, with recognition of these axes as aspects that base the humanization of care. Another integrating front of the practice of care is the provision of information, supported by the recognition of insufficiency and even the lack of information to women about the risk situation. However, they prioritize instrumental practice as an assistance core, referencing the nurse in support of this practice. It is concluded that, in fact, nursing care practice is central in instrumental actions and support to the physician. However, in its intentions it denotes centrality in the women's desire for emotional and informational reception, when they invest in achieving good interpersonal relationships with pregnant women. Relations between these issues are poorly interconnected, with emphasis on technical successes, with weaknesses in terms of practical successes, which does not allow them to be classified as integral. Attitudinal and structural changes are thus necessary, with attention to the humanistic and integrality precepts and, above all, focused on the practical success of the actions.
Políticas públicas no combate à desigualdade racial : uma análise da implementação da Lei nº 12.990/2014 em uma Instituição Federal de Ensino Superior
(Universidade Federal de São Carlos, 2017-11-23)
Rodrigues, Lilian Segnini
;
Molina, Wagner de Souza Leite
;
https://lattes.cnpq.br/5939243693407420
;
https://lattes.cnpq.br/2585697072138382
The issue of public policies for affirmative action, especially the reservation of vacants for blacks, whether on admission to the University or on the public service, is quite controversial. There are many arguments against this type of policy, notably involving meritocracy. However, the high level of racial inequality in Brazil makes these public policies necessary, since universalist policies of inclusion have proved insufficient over time to guarantee equal opportunity for blacks. In this sense, after the reservation of vacancies for blacks in universities, it is time for the state to intervene in the labor market. The Law 12,990 / 2014, which reserves for blacks 20% of the vacancies of public tenders for a period of ten years, within the Union, is hereby enacted. The objective of this research, therefore, is to analyze the implementation of this public policy in a Federal Institution of Higher Education (IFES), located in the State of São Paulo, identifying the fragilities and proposing improvements in this stage of the process. For that, a bibliographic survey is done, besides a case study, whose empirical object is the Federal University of São Carlos. To contribute to the proposals for improvement in the implementation of this public policy, interviews were made with members of two different black movements. It is concluded that the process of implementing this law can be improved in order to increase the number of vacants reserved for blacks. In addition, is raise the debate about the verification process of the veracity of self-declaration, involving the difficulty of establishing objective criteria. The proposed improvements involve, in particular, the awareness of the implementing agents.
Solidificação, microestrutura e propriedades mecânicas da liga de alumínio 6061 com 1,4%p Fe processada por conformação por spray e extrusão a quente
(Universidade Federal de São Carlos, 2017-11-24)
Pereira, Leandro Henrique
;
Bolfarini, Claudemiro
;
https://lattes.cnpq.br/9231627080617037
;
Botta Filho, Walter José
;
https://lattes.cnpq.br/8956458007749112
The 6xxx series aluminum alloys are wrought alloys which belongs to the MgSi class and can be heat treated, have a good workability and a good mechanical resistance / weight ratio. A great challenge is to avoid impurity elements in the aluminum alloys, like iron during the recycling cycle. The main effects of this type of elements are the formation of a coarsed microstructure and the nucleation of undesired intermetallic phases with a morphology that acts as stress concentrations and decreases the mechanical properties. The aluminum alloys that contains Fe are considered complex due to a range of intermetallic compound that can be formed. Due to the chemical composition of this alloy, this work will give some attention to intermetallic phases formed with low Fe content, like α-Al8Fe2Si phase and β-Al9Fe2Si2 phase. This study analyzed the solidification, microstructure and mechanical properties of an AA6061 aluminum alloy with 1.4%wt. of iron content produced by spray forming and hot extrusion, with the purpose of developing an recycling route that allows mechanical processing of the aluminum alloys with high Fe contamination. During the analysis of solidification and microstructure, it was noticed that the spray forming process change the alloy’s solidification path, also altering the morphology of the present phases. The mechanical characterization allowed the understanding of the effects caused by the contamination of iron on the mechanical properties of the alloy studied.
Análise da aplicação de modelos de otimização linear na solução de problemas de dimensionamento de lotes e sequenciamento da produção de bebidas.
(Universidade Federal de São Carlos, 2017-11-24)
Noble Ramos, Victor Mario
;
Ferreira, Deisemara
;
https://lattes.cnpq.br/0245267028273903
;
https://lattes.cnpq.br/9414682020715601
This dissertation adresses the general integrated lot sizing and scheduling problem for non-alcoholic beverage production with synchronization between stages and operating time windows for scheduling preventive maintenances. The problem is characterized by having two interdependent synchronized stages. In the first stage, machines (tanks) can supply several filling lines at the same time in the second stage, where the final items are packed. Production sequence-dependent times and costs exist. The review of the related literature indicates that existing models refer, generally, to particular cases of the general problem adressed here, the most common cases are the dedication of tanks to the lines, and disregarding the perishability of syrups and the possibility of scheduling preventive maintenances. A mathematical model for the general problem, called SMMRPM, has been proposed and applied in several instances to show the adherence and flexibility of the model to represent practical cases that can be found in reality. For the case of the dedication of tanks to lines, the model was compared with the dedicated model F1 (FERREIRA et al, 2012). The results indicate that the SMMRPM model is flexible and adherent to represent practical scenarios in which other models are not applicable, for example the possibility of scheduling preventive maintenance and consideration of perishability are differential of the proposal. In the plans obtained, it was shown that it is important to include these considerations that significantly affect the productive plans. In the case of dedication, compared to the dedicated model, the formulation SMMRPM achieves production plans, on average, 52.63 \% less costly than F1.
Efeitos isolados e combinados dos inseticidas fipronil e tiametoxam para a abelha brasileira Melipona scutellaris Latreille, 1811 (Hymenoptera, Apidae)
(Universidade Federal de São Carlos, 2017-11-24)
Araújo, Jéssica Freitas
;
Nocelli, Roberta Cornélio Ferreira
;
https://lattes.cnpq.br/8934724759636382
;
https://lattes.cnpq.br/5882656009354609
Pollinators are responsible for tropical forests polinization and also have direct and indirect action on human feeding. The pollinators are majorly represented by bees. Even though, this contribution has been affected by numerous factors, among them, agrochemicals. The tiametoxam and fipronil insecticides, from neonicotinoides and fenilpirazois classes, respectively, present numerous negative effects, including biochemical alterations, in different bees species. Therefore, the aim of this paper was to analyze, through biochemical techniques, acetilcolinesterase (AChE) and carboxilesterase (CaE) enzyme activities in the head and glutationa S-transferase in the intestines of Melipona scutellaris worker bees, exposed to the mentioned insecticides, combined and isolated. Bees forage were collected and divided into four experimental groups: Control, acetone control, LC50/2 (0,0226 ng i.a. tiametoxam/μL and 0,0056 ng i.a. fipronil/μL) and LC50/5 (0,00906 ng i.a. tiametoxam/μL e 0,0022 ng i.a. fipronil/μL) orally exposed, combined and isolated, for 1, 6, 12, 24, 48 and 96 hours. The brain and the intestines were dissected, weighted and submitted to LS drainage buffer solution, macerated and centrifuged. The absorbance readings were done in 412, 410, and 340 nm wavelength, respectively. The data was analyzed by the Mann – Whitney e Kruskal – Wallis tests. The results showed alterations in the AChE tissue activity to the fipronil insecticide raising in 1 hour (LC50/2 and LC50/5) and decreasing in 6 hours (LC50/2 and LC50/5) and 12 hours (LC50/2) and raising again in 96 hours (LC50/2 and LC50/5). To the tiametoxam insecticide there was a decrease at 6 hours (LC50/2 and LC50/5), 12 hours (LC50/2) and 24 hours (LC50/5) and a raise at 96 hours (LC50/2 and LC50/5). Combining these insecticides it was observed a decrease in AChE LC50/2 activity (6 and 12 hours) and LC50/5 (6 and 24 hours) and a raise in LC50/2 and LC50/5 (96 hours). In specific activity there was a decrease at 6 hours (Fipronil LC50/2 and LC50/5 and Combined LC50/2), 48 hours (Tiametoxam LC50/5) and 96 hours (Fipronil LC50/2 and Combined LC50/5). The following patterns were detected for the detoxification enzyme tissue CaE-3: Fipronil insecticide – decrease in 12 hours (LC50/2) and raise in 96 hours (LC50/2) and combined – activity decrease in CL50/5 group (6 hours). Differences statistically relevant weren’t identified in groups exposed exclusively to tiametoxam insecticide. Considering the GST activity, the acetone group obtained raise in one hour exposure; groups exposed to the fipronil insecticide LC50/5 (1 hour), LC50/2 and LC50/5 (96 hours) obtained decrease and raise in this enzyme activity, respectively. Considering tiametoxam insecticide it was observed a raise in the activity at 6 hours (LC50/2 and LC50/5) and at 12 hours (LC50/5); there was increase in the combination for the groups: LC50/2 (48 and 96 hours) and LC50/5 (6 and 12 hours). This way, we can conclude that the insecticides, combined or isolated, affect the analyzed enzymes, reflecting in the toxicity of these individuals when exposed to sublethal doses; they may cause death of the individuals, hives destructure, and impact ecosystem directly.
Filmes finos de Zn(1-x)Cu(x)O crescidos por Spray Pirólise
(Universidade Federal de São Carlos, 2017-11-24)
Silva, Diego Scolfaro da
;
Godoy, Marcio Peron Franco de
;
https://lattes.cnpq.br/2609654784637427
;
https://lattes.cnpq.br/3636859018525865
This work consists of investigations of the structural, morphological and optical properties of thin films of the Zn(1-x)Cu(x)O system grown on glass substrate using the Spray-Pyrolysis technique with Zinc and Copper acetates as precursors and work temperature in the range of 220°C and 300°C. Our research was based on the growth of the samples varying the Copper concentration from 0 to 100%, followed by the measurements of X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Optical Absorbance and Transmittance and Photoluminescence (PL). Finally we tested an application of the samples by studying the effects of different atmospheres on the Photoconductivity (PC). The structural characterization shows the growth of polycrystalline films with Wurtzite structure at Copper concentrations up to 10% and monoclinic structure at concentrations starting at 90%. Intermediate concentrations result in films exhibiting the two crystalline phases in coexistence. The crystalline quality accompanies this phase progression and the mean crystallite size is in the range of 9 to 14 nm. SEM images shows homogeneous surface with increasing roughness proportional to the amount of Copper. The Absorption Edge is reduced by the incorporation of Copper atoms in the structure, ranging from 3.31 eV for ZnO to 2.02eV for CuO. It is possible to detect the direct transition for all samples and an indirect for samples with copper concentration from 25%. In addition we show an increase in the absorption coefficient in the visible region. The photoluminescence of ZnO shows that the excitonic and defect-related transitions are present. The photoconductivity of ZnO is strongly dependent on point defects and the concentration of Oxygen in the atmosphere, whereas for CuO, photoconductivity shows little dependence on the atmosphere.
A série Free!: conexões entre “genre” e “gender”
(Universidade Federal de São Carlos, 2017-11-24)
Silva, Michele Delbon
;
Paiva, Samuel José Holanda de
;
https://lattes.cnpq.br/7222933274927263
;
https://lattes.cnpq.br/8016259400285266
The present research proposes a reflection on "gender", as the formulation of audiovisual discourses, and "genre", in the sense of the social construction of sexualities. To do so, an analysis was conducted about the first season of Free! (2013), relating it to yaoi, a genre of Japanese animation focusing on homosexual relationships between male characters. Taking the theories of Judith Butler as the starting point, a North American post-structuralist philosopher, and Antonia Levi, Japanese historian, this research seeks to formulate a method of reading to be coupled with film analysis within the perspective of the questioning about audio-visual and sexual discourses.
Uma sequência didática para o ensino de poliedros explorando o movimento lógico-histórico do conceito
(Universidade Federal de São Carlos, 2017-11-24)
Lima, Wilson Francisco da Rocha
;
Sampaio, João Carlos Vieira
;
https://lattes.cnpq.br/8286887389013685
;
https://lattes.cnpq.br/3420534562917526
The purpose of this work is comprehend and bring to the classroom environment a trajectory of the polyhedron as a concept through the history of human knowledge seeking to answer the following question: How would a didactic sequence that addressed the contents related to polyhedra that make up the curriculum of current Mathematics classes in a critical way, contextualizing the knowledge with the historical moment in which it was developed and articulating the contents with current researches of Scientific Mathematics? With Vygotsky's socio interactionist theory and Marx's dialectical materialism as a background, this work explores the presence of History of Mathematics on education in a sociocultural perspective, considering teaching-learning situations that can provide means of dialogue between the school culture and the one which the concept being taught initially appeared. Using as methodology the Didactic Engineering, a didactic sequence divided into three teachinglearning situations about polyhedrons was elaborated according to the curriculum and applied to middle school students. Based on the works of Greek philosophers Plato and Euclid and the Swiss mathematician Leonhard Euler, the sequence explores from main aspects of geometrical figures to the origins of Topology as an introduction to the conception of tridimensional objects on that field of Mathematics
Indicadores de sustentabildiade : um estudo da evolução do conhecimento na área da Administração Pública
(Universidade Federal de São Carlos, 2017-11-27)
Akim, Erica Kushihara
;
Faria, Luiz Carlos de
;
https://lattes.cnpq.br/2656343277991754
;
https://lattes.cnpq.br/7194665162653753
In a context of multilateral agreements, such as Agenda 21, which states and governments receive the delegation the responsibility for elaborating strategies and sustainable developments plans, knowledge about sustainability indicators have an important role. The objective of this study is investigated the evolution of issue in scientific research published in Web of Science (WoS) in public administration field between 1990 and 2016. The searched for factors for drawing up the trajectory of research, of Kuhn´s perspective, which considers Science as complex relation between theories, data and paradigms and not the gradual accumulation of knowledge. The method used is characterized by exploratory and descriptive, used a bibliometric and systematic analyses, with the support of graphs and views generated by the VOSViewer 1.6.5 and CiteSpace V. The main issues analyzed by this study from the bibliometric perspective are the evolution of publications, authors, institutions and journals. The systematic review identified the evaluation for methodological approach, the presence of sustainability dimensions, the locus and environment studied and topics. This study suggesting that publication between 1990 and 1999 have a great influence of economic approach. Gradually other fields start to be contributed, such as environmental science, planning and urbanism. Another important finding is the prevalence of theoretical and problem-solving studies. About locus studied, the city occupies an outstanding role, mainly in the period 2010-2016. It concludes that the scientific production is currently growing, but is impossible to argue that is consolidated. This is a multifaceted and interdisciplinary issue is related the profusion of topics and roles, but is impossible conclude about the existence the problem and modular solutions shared, which define the paradigm, in Kuhn´s perspective.
Programação linear aplicada a estatística
(Universidade Federal de São Carlos, 2017-11-27)
Jesus, Alan Henrique de
;
Diniz, Marcio Alves
;
https://lattes.cnpq.br/8948404469003829
;
https://lattes.cnpq.br/5769300952574842
Determine probabilities for events where we have few information or intervals for probabilities is not so simple. For this we will develop concepts of linear programming, which allows us to solve, in a certain way, the problem of determine a probability for an event of interest, but not always in a unique way. We will present some classic examples of statistics, such as: The Monty Hall Problem and De La Probabilité Des Témoignages. In addition, we will discuss the problem of pricing a call option, where we will use linear programming to solve them.
Agregação de valor nutricional e sensorial em rapaduras artesanais
(Universidade Federal de São Carlos, 2017-11-28)
Joseph, Djalou
;
Verruma-Bernardi, Marta Regina
;
https://lattes.cnpq.br/3470912236544684
;
Borges, Maria Teresa Mendes Ribeiro
;
https://lattes.cnpq.br/1800048119205212
Rapadura is a traditional product made from sugar cane juice (Saccharum officinarum L.). It is very popular in Latin America and the Caribbean, particularly in Haiti, where it is commonly used by the rural population. It is an energy food has a low content of basic nutrients (proteins, fibers and fat). The objective of this work was to aggregate nutritional and sensorial value in artisan shavings, to evaluate the effect of the addition of ingredients in both the nutritional value and the acceptance of the product and comparing with a biscuit that is a delicacy sold in Haiti. Five formulations of artisan rapaduras were analyzed in fiber, fat, protein, moisture, ashes and submitted to sensory analysis preferably in relation to color, aroma, taste, body, overall impression and purchase intention. For the physico-chemical characteristics, the results showed that the enrichment produced rapadura containing higher levels of protein and fat (with peanut, coconut grated and sesame) and a considerable percentage of fiber (with peanuts and sesame). Regarding the sensory characteristics, the means of the judgments for the different samples for each variable remained above the average on a scale of 1 to 9 or of 1 to 5 for purchase intention, regardless the type of ingredients added. Thus, enriched rapadura is a promising alternative as a nutritious delicacy from the family farming, available for populations like in Haiti in which the family farming occupies a prominent place.